Departure at the Alta Valtellina bike village stadium in Rasin Isolaccia. Launch section passing through the heart of the built-up area of Isolaccia. Start uphill to Pedenosso Alto S.Antonio tot Km 7 5 km on asphalt and then start on dirt road. Take the little white road of Decauville turn right towards Torri di Fraele At Torri di Fraele mt 1930 one of the most typical features of Valdidentro on the path of the ancient Via Imperiale one enters the spectacular valley of the same name. Passing near the small lake of Monte Scale one reaches the Cancano dams two artificial lakes of enormous dimensions that constitute an authentic work of hydroelectric engineering inserted in an environment of particular naturalistic interest. We skirt the first dam on the left side, we cross the dividing wall and we pass on the right side of the second dam, over 12 km mostly flat on a wide dirt road. Once in the locality of SGiacomo, keeping to the right, we proceed on an easy path towards Val Mora, near the Swiss border, we are still on the trail of the ancient Via d'Alemagna, a historic and important commercial link between Valtellina and the neighboring countries of northern Europe until 1487. Before crossing the border you turn and proceed in the direction of Pra Grata to return to SGiacomo Along the dam of SGiacomo on the right side after about 3 km completely flat in Val Pettin detour and start the climb to Alpe Trela 2200 m 2 km on a dirt road with a compact bottom At Alpe Trela after a short flat stretch you go up again on the path for 2 km to Passo Trela 2300 m Descent on single track 35 km in the direction of Val Pila arrived at the bottom of the valley continue on the path of Val Torta between Continuous ups and downs to Lake Livigno mt 1800 spectacular artificial lake that marks the border between Italy and Switzerland Ascent to Passo Alpisella km 5 on a dirt road from the compact bottom At Passo Alpisella mt 2350 descent to the dam SGiacomo first section on dirt road up to the spectacular trail that passes near the source of the Adda that leads to the bottom of the valley SGiacomo You skirt the dam SGiacomo right side km 3 entirely flat in the direction of the valley Pettin facing once again the ascent to Alpe Trela km 2 Short flat stretch and uphill again in the direction of Lago Nero for 15 km on the trail to reach Bocchette di Trelina mt 2283 Spectacular descent in the direction of Val Vezzola first part on fun singletrack and then continue on a dirt road to the junction of the path that goes to the valley of Foscagno after a series of technical ups and downs you go down and back on the flat road Decauville Passing in the locality Arnoga crossing the road to Livigno in the direction of Val Viola, a valley dominated by the mountains that are part of the Cima Piazzi and Corna di Campo group, in fact the Cima Piazzi, Cima Viola and Cima Dosde stand out. A first uphill stretch of 1 km leads to Val Verva. In Baite Verva Basso, on a newly created path, proceed along 3 km of fun ups and downs. The path becomes wider and after 1 km you pass through Val Cardonne, then turn left and after crossing the bridge, go up for 500 m. A smooth descent for 1 km and a detour to the right for Paluzzo. and detour to the right for Paluetta climb 1 km From Paluetta km 1 on varied terrain and you reach Alpe Boron mt 2057 Short descent and immediately turn right to face a climb of about 1300 km at times very challenging wall of Prei You get off in loc Prei particularly scenic place where the view can sweep over all the surrounding valleys covered in the first part of the track through a fun new flat path and slightly downhill you reach Alpe Pone Still on new downhill path you skirt the alpine ski slopes of Valdidentro up to the junction of the road of Palancana a long flat stretch immersed in thick pine forests among which there are extraordinary panoramic windows on the Bormio area Breathtaking descent towards the historical and naturalistic area of the Venini military fort and the reserve of Paluaccio di Oga Taking advantage of the fun trails built for the bike park of Oga you fly towards Motte la Corva and with passage on the winter cross-country ski trail and the bike path of Isolaccia you have arrived at